Example 2.2, “Property level constraint” uses the same entity as in Example 2.1, “Field level constraint”, however, property level constraints are used..By default, receives a single object at a time, transparently handling the Register a method to invoke after deserializing an object.The method receives the deserialized data and returns the processed data. It applies no formatting by default, and should only be used in cases where data does not need to be formatted before being serialized or deserialized. Register a method to invoke after serializing an object.The method receives the serialized object and returns the processed object.It’s likely that all the additional validation checks will slow down the process of inserting data, which is not a great result.